Bash Shell Profile Modificationedit
Both ~/.bash_profile and ~/.bashrc are files containing shell commands that are run when Bash is invoked. These files are executed in a user’s context, either interactively or non-interactively, when a user logs in so that their environment is set correctly. Adversaries may abuse this to establish persistence by executing malicious content triggered by a user’s shell.
Rule type: query
Rule indices:
- logs-endpoint.events.*
- auditbeat-*
Severity: medium
Risk score: 47
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Domain: Endpoint
- OS: macOS
- OS: Linux
- Use Case: Threat Detection
- Tactic: Persistence
- Data Source: Elastic Defend
Version: 104
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule queryedit
event.category:file and event.type:change and
process.name:(* and not (sudo or vim or zsh or env or nano or bash or Terminal or xpcproxy or login or cat or cp or
launchctl or java or dnf or tailwatchd or ldconfig or yum or semodule or cpanellogd or dockerd or authselect or chmod or
dnf-automatic or git or dpkg or platform-python)) and
not process.executable:(/Applications/* or /private/var/folders/* or /usr/local/* or /opt/saltstack/salt/bin/*) and
file.path:(/private/etc/rc.local or
/etc/rc.local or
/home/*/.profile or
/home/*/.profile1 or
/home/*/.bash_profile or
/home/*/.bash_profile1 or
/home/*/.bashrc or
/Users/*/.bash_profile or
/Users/*/.zshenv)
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Persistence
- ID: TA0003
- Reference URL: https://attack.mitre.org/tactics/TA0003/
-
Technique:
- Name: Event Triggered Execution
- ID: T1546
- Reference URL: https://attack.mitre.org/techniques/T1546/
-
Sub-technique:
- Name: Unix Shell Configuration Modification
- ID: T1546.004
- Reference URL: https://attack.mitre.org/techniques/T1546/004/